FIVE SEAS YACHT HIN Decoder
Hull Identification Numbers beginning with ZFY were assigned by the US Coast Guard to FIVE SEAS YACHT of VALLEYFIELD, QC. The company is recorded as out of business since 1992 — common for older hulls, and useful to know when hunting parts or records. Enter the full 12-character HIN below for build date, model year, and serial — free, no account.
MIC
ZFY
Location
VALLEYFIELD, QC
In business
since 1975
Status
Out of business (1992)
FIVE SEAS YACHT built hulls across both HIN eras (1975–1992): boats before August 1984 carry legacy straight-year or model-year date codes; later hulls use the current month-letter format. The decoder handles all three.
Free · no account · the HIN is on the transom, upper starboard (right) corner
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FIVE SEAS YACHT HIN FAQ
What does a FIVE SEAS YACHT HIN look like?
It starts with the three characters "ZFY" — the Manufacturer Identification Code the US Coast Guard assigned to FIVE SEAS YACHT — followed by a 5-character hull serial and a 4-character date code, 12 characters total. FIVE SEAS YACHT built hulls across both HIN eras (1975–1992): boats before August 1984 carry legacy straight-year or model-year date codes; later hulls use the current month-letter format. The decoder handles all three.
Is FIVE SEAS YACHT still in business?
USCG records list FIVE SEAS YACHT as out of business since 1992. That's common for older hulls — the HIN still decodes normally, and the out-of-business date helps date the boat and guides parts-hunting toward salvage and owner groups rather than a dealer network.
How do I decode the year on a FIVE SEAS YACHT HIN?
On current-format HINs the last two characters are the model year and the 9th–10th encode the certification month and year. FIVE SEAS YACHT built hulls across both HIN eras (1975–1992): boats before August 1984 carry legacy straight-year or model-year date codes; later hulls use the current month-letter format. The decoder handles all three. Enter the full 12-character HIN above and the decoder works it out, including the legacy formats.
Other builders in QC
Sources: USCG Manufacturer Identification Code database (uscgboating.org, refreshed monthly) · HIN format per 33 CFR 181 subpart C. Cite this page: CarWhere, "FIVE SEAS YACHT HIN Decoder," carwhere.com/hin-decoder/zfy, last verified 2026-06-12.